Consider the following chromosomes and if they are affected by hemophilia. X - unaffected X chromosome, x = X affected by hemophilia, and Y = Y chromosome. If an Xx female and XY male have children, what fraction of their offspring will have an affected chromosome, and what fraction is likely to be affected by the hemophilia? (1 point) A. 1/4 and 1/2 B. 1/2 and 1/4 C. 1/2 and 1/3 D. 1/4 and 1/4 Ive been stuck on this for a while now, can someone please assist?
Answers
Answer:
B. 1/2 and 1/4
Explanation:
Hemophilia is a disease inherited in humans. It is only carried on the X chromosome, hence, it is said to be X-linked. In this question;
X - unaffected X chromosome
x = X chromosome affected by hemophilia,
Y = Y chromosome
Hence, in a cross between a Xx female (carrier) and a XY male (unaffected), the following chromosomes will be present in the gametes produced by each parent:
Xx- X and x gametes
XY- X and Y gametes
Using these gametes in a punnet square (see attached image), offsprings with genotypes: XX, Xx, XY and xY are produced.
XX (1) - unaffected normal female
Xx (1) - unaffected carrier female
XY (1) - unaffected normal male
xY (1) - affected male
Based on the questions;
- 2 out of the possible 4 children have the affected chromosomes i.e. both xY son and Xx daughter have the x chromosome. Hence, the fraction is 1/2
- 1 out of the 4 possible children is affected by hemophilia, which is the xY son. Hence, the fraction is 1/4.
Answer:
1/2 and 1/4
Explanation:
Took the test
Related Questions
What happens to the oxygen released during photosynthesis ?
Answers
Answer:
oxygen is released as a byproduct.
Explanation:
it breaks down glucose, releasing chemical energy and heat in the process of photosynthesis.
PLEASE HELP ME I'LL MAKE YOU BRAINLIEST!!!!!!!!!! Lichens can best be described by which of the following? a) autotrophic organisms and fungi in a mutualistic relationship b) photosynthesizing fungi that can live in harsh environment conditions c) saprophytic fungi that secretes acids to grow on and colonize rocks d) two heterotrophic fungi species that thrive on nutrients from the air
Answers
Answer:
a) autotrophic organisms and fungi in a mutualistic relationship
Explanation:
A lichen "is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species".
It is cyanobacteria + fungi, so it has to be two separate groups, and both cannot be fungi.
Your question has been heard loud and clear.
answer is option C , lichens do colonize on rocks most of the time , this is because they really are saprophytic fungi , that secrete acids to melt and make the rocks suitable for growing on.
What do you mean by clean water?
Answers
Answer:
it means water not polluted, without dangerous bacteria, trash and something like this
Which would have a bigger effect on an organism, an error during transcription or a point mutation?
Answers
Answer: Point mutation would have a bigger effect on an organism.
Explanation:
You are studying flower color and find that purple flowers are dominant to white flowers. When a certain purple flowered plant was self pollinated, its progeny consisted of 76 purple and 25 white flowered plants. What was the genotype of the original purple flowered parent?
Answers
Answer:
dsi
Explanation:
sdf
At label ________, the cell is not hyperpolarized; however, repolarization is in progress, as the sodium channels are inactivated or becoming inactivated, and many potassium channels have opened.
Answers
Answer: C
Explanation:
When a neuron receives a stimulus, the sodium channels present in the membrane are opened, and therefore Na+ enters the cell in favour of the concentration gradient, so that the membrane potential changes to positive by means of ion exchange, producing depolarization. If this depolarization reaches a certain threshold value, an action potential is generated. The next step is the opening of the potassium channels and the inactivation of the sodium channels, so that the repolarization of the membrane takes place. The sodium channels, will return to the closed state in the hyperpolarization to continue in this state during all the rest potential achieving the action potential to return to -70 mV (repolarization).; until the arrival of a new action potential which produces the activation and opening of the sodium channels, repeating the cycle again and generating a new depolarizing action. This process is part of the synaptic transmission.
So, hyperpolarization is any change in the cell's membrane potential, which makes it more polarized. This means, hyperpolarization is an increase in the absolute value of the cell's membrane potential. Thus, changes in membrane voltage where the membrane potential is more distinctly positive or negative are hyperpolarizations.
During the repolarization period after an action potential, the membrane potential is more negative than when the cell is in "rest period". In the picture, this repolarization period is about 1-2 milliseconds. So, repolarization is the time in which the membrane potential is hyperpolarized with respect to the resting potential.
In the attached figure, part C indicates this repolarization period.
The Peppered moth is white with black spots, which helps it blend in with the bark on beech trees. The burning of coal in Great Britain caused many beech trees to become black with soot. Over time, the Peppered moth became all black in order to blend in with the new bark color. What type of example is this? homeostasis metabolism organization adaptation
Answers
Answer:
adaptation
Explanation:
Adaptation in Biology refers to the process whereby an organism adjust to its natural environment in order to increase its chance of survival or in other words, the organism becomes better suited to its natural habitat by possession of some adaptive features.
In this example, a white peppered moth with black spots initially possess these color combination in order to blend to its natural environment, which is the bark on beech trees. However, due to the burning of coal in Great Britain which caused many of the beech trees to be black, the peppered moths had to ADAPT to this change in environmental color by becoming all black in order to blend in with the new bark color.
Therefore, this is an example of ADAPTATION.
Answer:
adaptation
Explanation:
Which of these is NOT an example of biting and chewing insect?
(A)
Locust
(B) Grasshopper
(C)
Aphid
(D) Termite
(E)
Answers
Answer:
C aphid is the answer for that question
Answer:
yes
Explanation:
If there is a 1-degree change, coral reefs will become______?
Answers
Answer:
warmer
Explanation:
Which of the following will most likely result in anaerobic respiration?
A. Solving Algebra equations
B. Running
C. Sitting
D. Walking
Answers
Explanation: Anaerobic respiration occurs when there is NOT sufficient oxygen present. In this instance, the muscles do not have enough oxygen to create the energy you are demanding (usually from an increase in pace that is faster than your body is able to sustain, for example sprinting at the finish).
please help asap
Which statement describes the damage that results from earthquakes?
A: Amount of damage can be used to determine intensity.
B: Damage can be measured using the Richter scale.
C: The amount of damage increases as magnitude decreases.
D: Earthquakes that cause maximum damage are the most common.
Answers
Answer:
option c is correct
Explanation:
The statement that describes result from the activities of Earthquake is C: : The amount of damage increases as magnitude decreases.
An earthquake can be regarded as outcome of release of stored energy , which is released suddenly into the Earth's crust and as a result of this seismic waves is created.Earthquake do occur by displacement of the ground or by shaking the Earth's surface, Some of other results of earthquakes are;damage to bridgescause tsunamisinitiation of slope failuresloss of life However, as the earthquake is in action and as the damages increase, then there would be a decrease in it's magnitude.Therefore, option C is right because as its magnitude decrease, then the damage will increase.
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Which axiom is used to prove that the product of two rational numbers is rational?(1 point) Integers are closed under multiplication. Integers are closed under division. Whole numbers are closed under division. Natural numbers are closed under multiplication.
Answers
Answer: Integers are closed under multiplication.
Explanation:
Rational numbers are numbers of the form:
a/b
such that a and b are integers.
The axiom: " Integers are closed under multiplication. "
Says that if we have two integers, x and y, then:
x*y is also an integer.
So if we have two rational numbers,
a/b and c/d
Such that a, b, c and d are integers, and we multiply them, we have:
(a/b)*(c/d) = (a*c/b*d)
the numerator is a*c is the product of two integers, so this is an integer by the previous axiom.
the denominator is b*d, also a product of integers, so this is an integer.
then (a*d)/(b*d) is the quotient of two integers, then this is a rational number.
Answer:
the second one... Integers are closed under multiplication
Explanation:
At what coordinates is approximately california
Answers
Answer:
36.7783° N, 119.4179° W
Explanation:
why the circulatory system is considered to be a closed system?
Answers
Explanation:
human have closed circulatory system. this means blood is always enclosed in the vessels and the heart while circulating throughout the body IN this type of system blood is pumped by heart through arteries and veins and does not fill the body cavities thats why the circulatory system is considered to be a closed system
The following specimens/slides were shown to the students: mushroom, moss, earthworm, volvox, bacteria. The teacher asked them to classify them into the five kingdoms.
Answers
Answer:
Mushroom-Kingdom Fungi
Moss-Kingdom Plantae
Earthworm-Kingdom Animalia
Volvox-Kingdom Protista
Bacteria-Kingdom Monera
Explanation:
The classification of the organisms into five kingdoms is as follows:
Mushroom- Kingdom FungiMoss- Kingdom PlantaeEarthworm- Kingdom AnimaliaVolvox- Kingdom ProtistaBacteria- Kingdom MoneraWhat is classification?Classification is distributing the organisms into different groups according to their similar characteristics. The five kingdom classification is the approved form of classification today.
The five kingdoms are Monera, Protista, Fungi, Plantae, and Animalia, and the organisms are distributed in these kingdoms.
Thus, the classification is following:
Mushroom- Kingdom FungiMoss- Kingdom PlantaeEarthworm- Kingdom AnimaliaVolvox- Kingdom ProtistaBacteria- Kingdom MoneraLearn more about classification, here:
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Which of these statements can be predicted with the help of science
Answers
Answer:
Something that can be tested, or rationalized.
Explanation:
You didn't give any statements to choose from, so I'll give you a rule of thumb. When finding a scientific statement, make sure it's something like "The tide is higher at noon than it was at 3 am." and not "Your dog is itchy, so that means a bad storm will arrive."
What are the three basic parts of the cell theory?
Answers
Answer:
Answer
Explanation:
All living things are composed of cells.
Cells are the basic units of structure and function for living things.
All cells come from pre-existing cells. Also, organisms grow by “adding on more cells” NOT by increasing the size of their cells.
The three basic parts of the cell theory are:
All living things are made of cells.
Cells come from preexisting cells.
All cells have the same basic parts.
How do we explain?Cells are the basic unit of life. All living things, from the smallest bacteria to the largest redwood tree, are made up of cells.
Cells are not created spontaneously. All cells come from the division of preexisting cells.
Despite their great diversity, all cells have the same basic parts, including a plasma membrane, cytoplasm, and DNA.
The cell theory was first proposed by Matthias Schleiden and Theodor Schwann in the 1830s. It has since been supported by a vast body of evidence from cell biology. The cell theory is one of the most important and fundamental concepts in biology.
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explain the gaseous exchange in lungs
Answers
Answer:
Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
Hope it helped u if yes mark me BRAINLIEST!
Tysm!
Answer:
breathing allows the exchange between 2 gases: oxygen and carbon dioxide. Gas exchange occurs in millions of lung alveoli and the capillaries that surround them
Explanation:
which element is NOT generally found in proteins ? A. carbon B. oxygen C. phosphorus
Answers
Answer:
c
Explanation:
c
The diagram shows a straight chain of glucose molecules.
Which carbohydrate is shown above?
O fructose
O sucrose
O galactose
Ostarch
Answers
Answer:
Starch
Explanation:
Starch is a polysaccharide composed of many glucose molecules linearly arranged.
---------------------------------------
Fructose, sucrose, galactose, and glucose are carbohydrates. They are organic compounds with H, C, and O. Their functional groups are hydroxyl (-OH) and carbonyl (-C=O).Galactose, fructose, and glucose are isomeric monosaccharides, with the formula C₆H₁₂O₆.
Sucrose is a disaccharide composed of glucose + fructose. The formula is C₁₂H₂₂O₁₁.
Glucose is the most abundant carbohydrate. The main source of glucose is vegetable starch.
The starch molecule is composed of many glucose molecules joined.This is a linear polysaccharide that can acquire a tridimensional helicoidal conformation. Each of the helices turns consists of six glucose molecules. In the interior of the helix, there are only hydrogen atoms. Hydroxyl groups are facing the exterior.
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Help!!
How are all forms of asexual reproduction similar?
A. The offspring have identical DNA to the parent.
B. The offspring have different DNA than the parent.
C. They all require two parents to reproduce.
D. The offspring have diversified DNA in order to survive
Also explain why the answers are correct/incorrect.
Answers
Answer:
Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent. This type of reproduction occurs in prokaryotic microorganisms (bacteria) and in some eukaryotic single-celled and multi-celled organisms
Hope this helped!!!!
Answer:
Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent.
So A.
B. incorrect because they have the same DNA
C. incorrect because They do not need 2. it produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent.
D. incorrect because They do not have diversified DNA
Dump out half of the particles. Place your hand tightly over the top and shake the container. Then remove most of the remaining particles, and shake the container again. Compared with the full container, which states of matter do these two models most closely represent? Explain.
Answers
Answer:
solid
Explanation:
The two models explained are most closely representing the "solid" state.
As in both the models the techniques used are to separate particles through shaking technique and shaking is efficient gravity separation method which helps in separating solid particles such as while dealing with tungsten and tin.
Hence, the correct answer is "Solid".
Answer:
When the container was half full, the particles had more freedom to move around than they did when the container was full. A half-full container represents a liquid. When the container had only a few particles, they had lot more freedom to move about. So, this model represented a gas.
Explanation:
plato answer
Which type of graph would have a line of best fit?
O A. Scatter plot
OB. All of these
OC. Bar graph
D. Variable plot
Answers
Answer:
Scatter Plot
A line of best fit is a straight line that best represents the data on a scatter plot.
This line may pass through some of the points, none of the points, or all of the points.Answer:
Option B
Explanation:
Scatter plots and variable plots would have lines of best fits to approximate the data shown on the graph accurately.
A line of best fit on a bar graph is called a trendline. A trendline is a line or curve that shows the overall pattern for data on a bar graph.
Option B should be the best answer.
Hope this helps.
In brief state what happens when a) dry apricots are left transferred to sugar solution? b) a Red Blood Cell is kept in concentrated saline solution? c) the Plasma-membrane of a cell breaks down? d) rheo leaves are boiled in water first and then a drop of sugar syrup is put on it? e) golgi apparatus is removed from the cell?
Answers
Answer:
Explanation:
(a) Dry apricots when placed in pure water swell due to osmosis and when in sugar water, they shrink again.
(b) When a Red Blood Cell is placed in concentrated saline solution exosmosis occurs and the RBCs shrink due to excess loss of water.
(c) Breaking of the plasma membrane leads to the scattering of the ceil organelles as it forms the basic supporting unit of the cell.
(d) When Rheo leaves are boiled in water first and then a drop of sugar syrup is put on it, osmosis does not occurs, due to the death of the cells of the leaf. This shows that selective permeability is property of living plasma membrane.
(e) Golgi complex helps in the package, storage and transfer of proteins synthesized by ribosomes. Thus, when ribosomes are removed the cell will not function properly
Identify the interaction used to describe each type of interdependence among organisms. _______Having too many fish in a pond can limit the amount of food and space available. _________ The cheetah population depends on the gazelle population for food the answer choices are predation and competition
Answers
Having too many fish in a pond can limit the amount of food and space available is Commensalism.
The cheetah population depends on the gazelle population for food Mutualism.
What are the three major types of interactions among organisms?There are 03 main types of interchange among organisms:
Competition, Predation, and Symbiosis.Thus, Commensalism and Mutualism is the correct answer.
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Answer:
Identify the interaction used to describe each type of interdependence among organisms.
✔ competition
Having too many fish in a pond can limit the amount of food and space available.
✔ predation
The cheetah population depends on the gazelle population for food.
Given the relationships identified above, determine what would happen to the populations under the following circumstances.
✔ increase
If the cheetah population decreases, what would happen to the gazelle population?
Explanation:
I need help im not understanding what to do.
For this assignment, you'll be creating a document or project. Now that you have an idea of the organ systems in the human body, it’s time to choose one that interests you the most. Use the links below to find detailed information about the organ system you choose. You will use this information to create a poster in Glogster or PowerPoint that illustrates the major facts and details of the system you chose. To make it fun and interesting, create a “ Travel Guide” that takes the reader through the system, detailing the organs in that system and what they do for the body.
To complete this assignment follow these steps: Choose your organ system to profile. Research the following information about your organ system: Short description of the organ system: What does the “organ system” do? (IE: endocrine system) How is the system organized? What are the major organs in this system? What is the main or most important organ in the system? How do these organs work together to do what they do? What are the functions in the human body that are done by this organ system? What would happen to the body if this organ system “failed”, or didn’t work right? Use the links to websites to gather that information. Save any graphics you want to use in creating your Poster.
If you choose Glogster: Go to Glogster and follow their instructions in setting up an account. It’s easy and it’s free. Watch the tutorial and then get started!
Answers
Answer: Here's a power point on the endocrine system. I hope this helps.
Explanation:
In the database, Academic Search Complete (Links to an external site.), search for the article "Brevetoxicosis: Red Tides and Marine Mammal Mortalities" by Flewelling et al. If you wanted to explore more of the scholarly conversation by taking advantage of "citation chaining" what links could you click on to help with this task
Answers
Answer: The link I would be clicking on with this task is Molecular detection of the brevetoxin-producing dinoflagellate Karenia brevis and closely related species using rRNA-targeted probes and a semiautomated sandwich hybridization assay. Therefore, the task will be accomplished having done this.
about plant kingdom
Answers
Use the image to answer the question below: Using the model presented, what process is being depicted? A) An electrical signal being converted to a chemical signal B) Salutatory conduction C) The transfer of neurotransmitters between axons D) The path of a steroid hormone
Answers
Answer:
option A is correct because of it is undergoing a convertion
Which of the traits below are completely influenced by the expression of genes? (Choose all that apply)
weight
attached or unattached earlobes
hair texture
eye color
Answers
Answer:
attached or unattached ear lobes
